Biofiltration of dichlorobenzenes.

The use of air biofiltration for the degradation of dichlorobenzenes (1,2-DCB and 1,4-DCB) was studied at a refinery site. At this plant, 93 m3/h of contaminated groundwater, used in a cooling system and containing a maximum of 2 ppm of dichlorobenzenes, had to be treated. Stripping of the DCBs followed by biofiltration was selected as the most suitable technology to avoid volatilization in ambient air as expected with a wastewater aerobic treatment system.

Rearrangement of immunoglobulin gene in metastatic Waldenström macroglobulinemia to the vitreous.

Purpose: To report metastatic Waldenström macroglobulinemia cells with immunoglobulin heavy chain gene rearrangement in the vitreous and the blood.

Methods: A 58-year-old man with Waldenström macroglobulinemia developed bilateral vitreitis. Diagnostic vitrectomy was performed on the left eye.

Treatment of uveitis with recombinant human interleukin-13.

Aim: To evaluate the anti-inflammatory cytokine interleukin-13 (IL-13) for the treatment of uveitis.

Methods: Uveitis was induced in monkeys by immunisation with human retinal S-antigen. Starting at the onset of disease, the animals were treated with IL-13 at 25 micrograms/kg, or vehicle control, injected subcutaneously once a day for 28 days.

Simulation of propagation along an isolated skeletal muscle fiber in an isotropic volume conductor.

This paper describes a model of the frog skeletal muscle fiber that includes the effects of the transverse tubular system (T system) on propagation. Uniform propagation on an isolated fiber suspended in Ringer's solution or in air is simulated by placing the cylindrical fiber model in a concentric three-dimensional isotropic volume conductor. The current through the T system outlets at the sarcolemmal surface is comparable in magnitude to the sarcolemmal current density, but is of opposite polarity.

Simulation of propagation in a bundle of skeletal muscle fibers: modulation effects of passive fibers.

Computer simulations are used to study passive fiber modulation of propagation in a tightly packed bundle of frog skeletal muscle fibers (uniform fiber radius of 50 microns). With T = 20 degrees C and a uniform nominal interstitial cleft width d = 0.35 microns, about 92% of the active fiber source current (Ima) enters the passive tissue as a radial load current (Iep) while the rest flows longitudinally in the cleft between the active and adjacent passive fibers.